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difference between aspire transmission and festiva? which for bp swap?

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  • #1

    difference between aspire transmission and festiva? which for bp swap?

    My '88 lx festiva came with a 4 speed with junkyard writing on the side. I also have a 5 speed out of a 94 aspire I pulled before I sold the rest of the car. I read that the transmissions are basically identical 5 speed festiva to 5 speed aspire, but the aspire transmissions have a marginally shorter final drive.

    Whichever one I go with will be behind my BP swap.

    The other will probably be kept as a spare.

    thoughts?

    on the one hand I'd like to have 5 speeds. just because?
    on the other, with the power of the bp 4 speed shouldn't be a big issue if the final drive is better. but not sure.
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  • #2
    I dont think it would be a good idea to put the 5 speed behind a BP. They arent built for more than about 100hp and eventually youll likely have it grenade on you. Cant speak to the 4 speed, have no idea what it can handle.
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    • #3
      I plan on being relatively easy on the car. it will be for my mostly highway commute. I don't think either of them are built to handle a ton of abuse... considering I think my car made something around 56 hp stock.

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      • #4
        Re: difference between aspire transmission and festiva? which for bp swap?

        The aspire 5 speed runs like 300 rpms less at 55 than the festy 4 speed, even with the shorter diff gear.
        91GL BP/F3A with boost
        13.79 @ 100, 2.2 60' on 8 psi and 155R12's

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        • #5
          yeah I was thinking that would be the case. I believe thats the one I'll be going with then. thanks...

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          • #6
            Either tranny will hold up fine with normal driving, including strong acceleration while moving. Launching from a stop will kill them for sure tho.

            Edit: recommend a Stage 2 pressure plate and a new Sachs clutch. And while you're in there, a new rear main seal.
            Last edited by TominMO; 01-25-2013, 11:20 AM.
            90 Festy (Larry)--B6M (Matt D. modified B6 head), header, 5-speed, Capri XR2 front brakes, many other little mods
            09 Kia Rondo--a Festy on steroids!

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            • #7
              Originally posted by bhazard View Post
              The aspire 5 speed runs like 300 rpms less at 55 than the festy 4 speed, even with the shorter diff gear.
              Wow I didnt realize the 4 spd was that steep.Thx for sharing that, someone just offered us a 4 spd for my Sons car. He drives all highway,I dont think he'll be happy with a 4 spd.
              Some people like to read fiction,I prefer to read repair manuals. Weird I know-
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              • #8
                I've got the spec stage II ready to go on. It was the only aftermarket clutch I could find, I searched and posted here before buying it.

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                • #9
                  Re: difference between aspire transmission and festiva? which for bp swap?

                  Yeah if I remember the 4 speed was turning like 2900-3000 at 55ish. It was screaming at 80+
                  91GL BP/F3A with boost
                  13.79 @ 100, 2.2 60' on 8 psi and 155R12's

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